I have mixed feelings when it comes to html5.The games are slow and almost unplayable.I will stick to Macromedia flash if i want to create web browser games.Ive been playing around with game maker 8.0 pro now and i must say it's quite good.Game maker 8.0 pro also has the powerful GmOgre 3d plugin which i still need to see in CS.I love all these click&create progs ,they make life a little easier for creating small but fun games.
Both CS2 and GM has thier plus and minus points , So i cannot say which is better at the moment.Yes CS2 and CS are remarkable apps,But if you have both GM and CS then you can do so much more.
Im not a Pro Game Maker user,I think it's silly to compare two very different apps.And seeing the positive response i got on thier forum's about Construct . It's unfair to diss thier app.